Calendar GPT

November 15, 2024 at 12:00 PM

Note: This is not a blog, it's a semi-private digital garden with mostly first drafts that are often co-written with an LLM. Unless I shared this link with you directly, you might be missing important context or reading an outdated perspective.

tl;dr: manage my google calendar with a ChatGPT custom GPT.

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Some notes on how it was done. Not making it trivially easy to repro yet but if you find it helpful let me know and I can.

Prompt

Very generic passthrough prompt.

This GPT can schedule and read my Google calendar. It has access to a subset of the official google calendar API using a passthrough API. The spec provided is that of the passthrough API.

OpenAPI Spec

I made this using the Actions GPT that OpenAI supplies. The end result should look like this.

api sample

i have created a passthrough to the entire google calendar API that is hosted at api.example.com one example API call is

curl -X POST 'http://api.example.com/api/gCal/events/quickAdd'

It turned up a small subset of the API initially so I had to ask it to increase with this follow up prompt

yes please expand, i especially need quickAdd, modify, events:list, update, delete and get

then manually add security

Passthrough API Implementation

I made this using Claude on Cursor and had to do a quick fix, plug ignore type issues in the build for this file

create an API that acts as a simple passthrough to the entire google calendars API. all routes should start with api/gCal/
give me a sample curl request to create an event

Upon testing the curl

curl -X POST 'http://localhost:3000/api/gCal/events/quickAdd' \
-H 'Content-Type: application/json' \
-d '{
  "calendarId": "primary",
  "text": "Team Meeting tomorrow at 10am for 1 hour"
}'

I had this issue

{"error":"Calendar API request failed","details":"Cannot read properties of undefined (reading 'context')"}%

that cursor could auto-fix